Definition of cislunar
: lying between the earth and the moon or the moon's orbit
cislunar space
Test Your Vocabulary
Challenging Words You Should Know
-
- Often used to describe “the march of time,” what does inexorable mean?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share cislunar
Time Traveler for cislunar
The first known use of cislunar was circa 1877
See more words from the same year